1963 A lighted buoy in the Tsurumi Shipping Lane, Yokohama Bay, the world’s first buoy supplied with a solar cells.

Buoys using photovoltaic modules installed in Yokohama Bay and the Strait of Malacca.

A lighted buoy in the Tsurumi Shipping Lane, Yokohama Bay, is the world’s first buoy supplied with solar cells. Today, Sharp's solar cells are used as power sources for lighthouses, unmanned weather stations, and satellites. The solar cells have proved their reliability in harsh environments or other places that are difficult for people to reach.